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EXPERIMENTAL PERFORMANCE OF THE SYSTEM WATER/MAGNESIUM CHLORIDE IN A HEAT TRANSFORMER

EXPERIMENTAL PERFORMANCE OF THE SYSTEM WATER/MAGNESIUM CHLORIDE IN A HEAT TRANSFORMER Absorption heat transformers are devices with the unique capability of raising the temperature of part of a low grade heat source whilst simultaneously rejecting the rest of the heat at a lower temperature. The gross temperature lift that could be attained in the process depends on the characteristics of the working pair. Many combinations of working fluid/absorbent have been proposed although until now the water/lithium bromide system is the most widely used. Experimental results for the water/magnesium chloride working pair in an absorption heat transformer are presented. Two different ranges for the absorber temperature were investigated. The absorber temperature varied from 81 to 89°C and from 91 to 101°C. For the first case, the gross temperature lift was calculated between 7⋅8 and 10⋅2°C whilst for the second case the gross temperature lift was found to be between 15 and 18⋅4°C. For both sets of experiments, the heat input was maintained constant and the calculated coefficient of performance was related to the absorber temperature, the flow ratio and the effectiveness of the economizer. © 1997 by John Wiley & Sons, Ltd. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png International Journal of Energy Research Wiley

EXPERIMENTAL PERFORMANCE OF THE SYSTEM WATER/MAGNESIUM CHLORIDE IN A HEAT TRANSFORMER

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References (8)

Publisher
Wiley
Copyright
Copyright © 1997 John Wiley & Sons, Ltd.
ISSN
0363-907X
eISSN
1099-114X
DOI
10.1002/(SICI)1099-114X(199702)21:2<139::AID-ER226>3.0.CO;2-1
Publisher site
See Article on Publisher Site

Abstract

Absorption heat transformers are devices with the unique capability of raising the temperature of part of a low grade heat source whilst simultaneously rejecting the rest of the heat at a lower temperature. The gross temperature lift that could be attained in the process depends on the characteristics of the working pair. Many combinations of working fluid/absorbent have been proposed although until now the water/lithium bromide system is the most widely used. Experimental results for the water/magnesium chloride working pair in an absorption heat transformer are presented. Two different ranges for the absorber temperature were investigated. The absorber temperature varied from 81 to 89°C and from 91 to 101°C. For the first case, the gross temperature lift was calculated between 7⋅8 and 10⋅2°C whilst for the second case the gross temperature lift was found to be between 15 and 18⋅4°C. For both sets of experiments, the heat input was maintained constant and the calculated coefficient of performance was related to the absorber temperature, the flow ratio and the effectiveness of the economizer. © 1997 by John Wiley & Sons, Ltd.

Journal

International Journal of Energy ResearchWiley

Published: Feb 1, 1997

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